Green Numbers Created and maintained by: Erik Johnsen 2010 Purpose: to give people ideas and get people thinking. Send new ideas and I will incorporate them into the page: webmaster@scrollseek.com

Misc 120 quadrillion watts of sunlight constantly fall on Earth (source: National Geographic, September 2009, Plugging Into the Sun, pg29) 64MW can power 14,000 households (source: National Geographic, September 2009, Plugging Into the Sun, pg30) Current total power needs (2009) of the humans on Earth is 16 terawatts, and is expected to be 20 terawatts by 2020 (source: National Geographic, September 2009, Plugging Into the Sun, pg34)

Total Renewable Energy Availability (source: National Geographic, September 2009, Plugging Into the Sun, pg40) Energy Amounts Solar Photovoltaic 470,278 TWh Concentrating Solar 275,556 TWh Wind (land-based) 105,278 TWh Ocean (tidal and wave) 91,398 TWh Hydro 13,889 TWh Geothermal 12,500 TWh Wind (offshore) 6,111 TWh Total 975,010 TWh

Electricity Generated Worldwide in 2006 (source: National Geographic, September 2009, Plugging Into the Sun, pg40) Energy Amounts Nonrenewable resources 81.51% Hydro 16.41% Other renewable 1.37% Wind 0.68% Solar 0.2% Total 19,015 TWh

Ref 640 acres per square mile

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